.p{
	width: 500px;
	height: 270px;
	position: relative;
}
.z{
	position: absolute;
	left: 0;
	top: 0;
}
.y{
	position: absolute;
	right: 85px;
	top: 199px;
}
.p:before{
	content: "";
	width: 500px;
	height: 270px;
	display: block;
	position: absolute;
	left: 0;
	top: 0;
	background: url(../img/哈.jpg) no-repeat;
}
.b{
    position: absolute;
    top: 27%;
    right: 27%;
}
body{
    background-image: url(../img/背景3.jpg);
    background-repeat: no-repeat;
    background-position: 100%;
}